Motor-cycle frame.



c. O'Q'HBDSTROM & c. J. GUSTAFSON;

MOTOR O YOLE FRAME. APPLIOAJ'ION rILnp HAY 17.19.12.

Patgnted June 23, 19m

v BBHEETS-SHBET 1. M

G. HE DSTROM 6: G. J. GUSTAFSON.

MOTOR GY GLE FBAME. APPLICATION FILED HAY 17,1912.

- Pa tented June 23, 1914.

2 SHEETS-SHEET Z.

struction shown in the accompanying draw- I ing, in wh ich,

Figure 1 shows a perspective of a motorof the steejrin UNITED sTATEs CARL O. HEIDSTROM AND CARL ASSIGNOBS TO HENDEE MANUFACTURING COMPANY, GHUSETTS, .A CORPORATION OF MASSACHUSETTS.

J. GUSTAFSON, on SPRINGFIELD, MASSACHUSETTS,

or SPRINGFIELD, MASSA- moron-oxen: Fania.

Specification of Letters Patent. PatentdJu 23,1914 Application filed May 17, 1912.. Seriai 1101691926.

To all whom itmag concern: 1

Be 1t known that we, CARL O'. Hnnsrnom; and CARL J. GUSTAFSON, a citizen of the United States and a subject of the King of Sweden, respectively,'residing at Spring field,in the county ofHampden, State of Massachusetts; have invented certain new and useful Improvements in Motor-Cycle Frames, of which the following is a descrip- 1 tion, reference being had to" the accompanying drawing, and to the figures of refer-- ence marked thereon.

- Our invention relates. to spring frames for motorcycles;

The objects of the invention are to provide improved spring supports for both the rearand front wheels, which will absorb the shocks; to reinforce the main spring onits rebound by means of a lower leaf; to provide a stop on the spring which will, in the event of the main spring breaking, prevent the spring from slipping out of the shackle; also to provide the shackle with upper and lower cushions for the spring; also to improve the construction ofthe shackle.

These objects we accomplish by the concycle frame with our improvements applied; Fig. 2 is an enlarged --perspective of. one of the rear springs and shackles; and Fig.

' 3 is a side view of the front spring and shackle.

1 designates the frame as vided at its front with the usual steering head, in which is" mounted thespindle 3 fork 2. This fork 2 is vfirmly braced by a ivided rigid truss 4, the lower ends of which of thefork 2, while its upper portions are connected to the crown of fork 2, the upper arms of the truss converging into a' smgle post 6, which is secured to the upper end of the fork spindle 3 by an arm 7. To the lower ends of the fork 2 are pivoted the bell crank levers 8 in the angles of which are mounted the bearings of the front wheel 9. Frojm'the rear arms of thebell crank levers the levers 10 extend upwardly, and are united at the upper ends by two cross bolts 11, 12, which form with the upper ends of the levers 10, a shackle for the'spring 13.

a whole, prosidesof the shackle-t0 form a stop to are secured to the'lower ends This spring 13 extends forwardly from the crown of the fork 2, to which it is rigidly secured, through the shackle, and its middle leaf-is curved-downwardly and rearwardly and formed with an eye 14, through which the lower cross bolt 12 extends. The upper leaf l5, of the spring 13 is rolled into an eye 16, in front of theshackle, 17 extends therethrough and beyond the revent the sprin -from p shackle in caset e break. 7

The bottom spring leaf l8 terminates where the middle leaves begin to curve, and forms a reinforce for the main leaf spring on .the rebound. This spring leaf 18 is secured at its forward end piece. of a clip 19, which spring.

Within the shackle is a rubber bumper 20, below the spring 13, while above the spring is a second bumper 21, so that contact of the spring with the bolts 11, 12, is prevented, avoided. The bumper 20 is a projecting pins 22 at spring or its pin 12 should block, and has its opposite sides,

which prevent it from getting out of place,

while the upper bumper 21, is alcylinder, and is mounted on the bolt 11. It will'be seen, therefore, that a most effective and noiseless spring support is provided for the frontwheel, which receives, and would with-- out such a device, transfer most of the disagreeable' shocks and jars due to obstacles and ine ualities of the road. p

e rear wheel is mounted in bearings 23, at the rear end of a horizontal fork 24, pivoted at its forward end to the lower of the rear end of the frame, 25, and from the rear ends of extend u wardly the lever rods 26, 26, pivotedat t eir lower ends to the upper ends ofjthe bearings 23; and provided at their upper ends with forks orshackles 27. Upper and lower cross bolts these shackles '27, and secure in place the lower ends of an upwardly extending yoke as shown at the fork"24 and a cross pin pulling through the part to the lower cross embraces the main and noise and shock thereby 1.

28, 29, extend across 30, which connects the two shackles 2'2, and

straddles the upper partof the rear wheel. A pair of springs is employed at the rear,-. {eac springhayinfg two middle leaves instead of one, as in the front spring;

inforcmg springs.

The forward ends of the rear springs 13 are secured to a rearwardly extending arched bracket 32, firmly secured as shown, to the rear upper end of the frame. These springs 13 extend through the shackles 27 and are curved downwardly and thence forwardly, to the lower shackle bolts 29.

The upper spring leaves have the stop pins 17 and the lower spring leaves are con- 1 nectedto the clips 19. The same bumpers are also employed in the rea'r shackles 27. In striking any obstruction or inequality, the. rear wheel will move upwardly on its fork axis 25, and in so doing the rods or levers 26 will raise the connected shackles 27 and the curved .ends of the and neutralize all shocks due to extreme movements of'the springs. In the rebound or return movements of the arts, the lower.

leaves 18 of the springs will a sorb the shock and stiffen the main leaves of the springs.

- When the wheel strikes an obstruction,

it is a slight one the loop part will take upbumper .spring, entire body the shock. If theshock is a yond the capacity of the loop,

20 strikes the under side of great one beand the the of the spring. On the rebound, the bumper 21' acts as a shock absorber, and the lower body thereof, or in effect acts in opposition thereto, reventing too great travel of the loop, an therefore, danger of crystallization.

Having thus described our invention,

" what we claim as new and desire to secure by connecting said spring to said Letters Patent, is

1. A motorcycleframe including a main spring, a movable wheel support, means for ppo d spring comprising a central leaf to -which I said support spring, a movable wheel support,

- -tral spring leaf to I as.

is connected, an upper leaf for reinforcing said central leaf on the u ward movement thereof, and slower leaf or resaid central leaf on the rebound. 2.: A motorcycle frame including a. leaf said spring comprising -a. lurahty of sprlngbieaves, the center leaf 0 "which extends yond the outer ends of the spring leaves above and below the same, means for connecting said censaid S pport, said central bent backward and at-'- sprin leaf being tache to said connecting means at a int in rear of the ends of the upper and ower spring leaves. e 3. I motorcycle frame inclu a leaf spring, a movable wheel support, said spring comprising a lurality of sprin leav the center leaf. 0 which extends beyon d the outer ends of the spring leaves above and below the same, means for connecting said central spring leaf to said support, said central -spring leaf-being bent backward and atthen the shock is transferred to the leaf of the spring reinforces the support.

8." A, motorcycle 7 including zbracket rigidly attached to said frame, a

- shackle connected to tached to said connecting means-at a point i in rearo f the ends of the upper and lower spring leaves, said connecting means including a shackle attached to the free end of said central s ring leaf, a bumper carried by said shadkle above and below said. spring leaves and in rear of the ends of the upper and lower spring leaves.

4. In a vehicle frame, a spring having its free end curved back upon itself, a shackle through which the spring passes with its free end secured therein, bumpers mounted\ in the shackle above and below the spring, a movable wheel support or hearing below the spring, and a connection between the wheel support and the shackle. The bumpers 20, 21, will take up 5. In a vehicle frame, a spring having its free end curved back upon itself,a shackle through which the spring passes with its -.free end secured therein, bumpers mounted in the shackle aboveand below the spring a movable wheel support or hearing below the spring, a connection betweenthewheel support and the shackle, and a sto on the spnng adapted to engage the shac e in case the spring should break.

6. A motorcycle frame including a shackle, a leaf spring rigidlyattached to said frame and having its free end extendmg through said shackle, the free end. of

and secured thereto, a sto on the spring adapted to engage the shac e if the sprin should break, a movable wheel support,'an

piece secured to said eyeon the lower spring.

leaf, a shackle through which the spring projects with its free end secured thereto,"

an upwardly movable wheel support, and rods connecting the wheel support ,and

shackle; a r e a pair of rearwardly extending spaced-paral- I lelleaf springs rigidly fixed to said. bracket and located on opposite sides of the wheel, a

the free end ofeach spring, means for connectindg the shackles, a mova le wheel support, an for con-p necting said support with the shackles .-9. A motorcycle-including a frame, a-

bracket rigidly attached to said frame, a

air. of rearwardly extending spaced paral- 1 leaf springs rigidly fixed to said bracket and located on op insides of the wheel,

95 sald sprlng being curved under the shackle mosses each spring being bent backwardly, a shackle connected to the free end of each spring, said shackle for each spring having a bumper above and below the spring, an arch for connecting said shackles, a movable wheel support, and devices for connecting said movable wheel support to said shackles, said movable wheel support being connected with the frame for guiding the up and down movements thereof relative to said frame.

10. In a motor cycle frame, a pair of rear- .wardly extending springs having their free ends curved under, shackles through which the springs pass with their free ends secured thereirnbumpers on the shackles above and below the s rings, an arch connecting the shackles, a pivoted forked wheel support be- .low the springs, and rods connecting the two ihafikles with the arms of the said wheel or r 11. In a motor cycle frame, a pair of rearwardly extending main springs having their ends curved under, connected shackles bumpers in the shackles for the springs, and stops on the springs in rear of the shackles. 13. In a motor cycle frame, a pair of rearwardly extending main springs having their free ends curved under, a rearwardly extending vertically movable forkfor the rear wheel, rods extending up from the fork arms and provided at their up er ends with shackle-forming yokes, em racing the springs and provided with lower bolts, to which the free ends of the springs are connected, and u per bolts'above the springs, and an arch etween the shackles and secured thereto by the inner ends of said bolts. I

14. .A spring for vehicle frames having its main leaf portion bent back upon itself, a bottom leaf forming a rebound spring, and a shackle with bumpers mounted therein above and below the spring.

15. A main spring having its free end bent back upon itself, a shackle through which it passes, with its free end secured thereto, a lower leaf secured to a. clip surrounding the main portion and formed to act in opposition to the main spring on the rebound, and an upper leaf provi a stop.

In testimony whereof we aflix our signatures in the presence of two witnesses.

' CARL O. HEDSTROM.

CARL J. GUSTAFSON. Witnesses:

O. L. STURTEVANT, JOHN D. STEPHENS.

d with 

